PHYWE Cobra SMARTsense User manual

1
www.phywe.com, © All rights reserved 12936-10 / 2621
Operating
instructions
Cobra SMARTsense Spirometer
12936-01
PHYWE Systeme GmbH & Co. KG
Robert-Bosch-Breite 10
D–37079 Göttingen
Telefon [phone]
Fax [phone]
E-mail [email protected]
Internet www.phywe.com
The unit complies
with the applicable
EC-guidelines
Fig. 1: 12936-01 Cobra SMARTsense Spirometer
TABLE OF CONTENTS
1SAFETY PRECAUTIONS
2PURPOSE AND CHARACTERISTICS
3FUNCTIONAL AND OPERATING ELEMENTS
4NOTES ON OPERATION
5HANDLING
6TECHNICAL DATA
7SCOPE OF DELIVERY
8ACCESSORIES
9 CONFORMITY
10 DISPOSAL
1 SAFETY PRECAUTIONS
Carefully read these operating instructions completely
before operating this instrument. This is necessary to
avoid damage to it, as well as for user-safety.
Only use the instrument for the purpose for which it was
designed.
Only use the instrument in dry rooms in which there is no
risk of explosion.
Protect the instrument from dust, moisture and vapours.
Use a slightly moist lint-free cloth to clean the instrument.
Do not use aggressive cleaning agents or solvents.
Take care that no liquid penetrates in through the hous-
ing openings, as such penetration would result in dam-
age to Sensor.
Do not open the unit.
2 PURPOSE AND CHARACTERISTICS
The sensor is used for measuring the respiratory volume and
volumetric flow rate and for transferring the values to a termi-
nal device, e.g. a tablet computer, smartphone, etc., via Blue-
tooth or USB.
The sensor is neither suitable nor approved for medical pur-
poses. It is intended solely for didactic purposes. This device
must not be used for defined measurements on humans in
order to diagnose an illness or disease, i.e. it is not intended
for monitoring, treating or alleviating illnesses or diseases. As
a consequence, it is not subject to the strict constraints of the
Medical Devices Act.
Caution!

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3 FUNCTIONAL AND OPERATING ELEMENTS
3.1 Operating elements
The sensor has an on-button and two LEDs for indicating the
Bluetooth and battery charge status.
On-button
To switch the sensor on and off in Bluetooth mode, the power
button must be pressed for longer than 3s. If the sensor is to
be connected via USB, it is not necessary to press the power
button.
Bluetooth-LED
Flashing red every 2 seconds
Not connected
Flashing green every 2 seconds
Connected to the ter-
minal device
Flashing green every 4 seconds
Running measurement
Battery charge LED
Flashing red every 2 seconds
Low battery
Illuminated red
Active charging process
Illuminated red
Charging process
completed
3.2 USB port
The battery, which is permanently installed in the sensor, is
charged via the type C USB port. Furthermore, communica-
tion with a computer takes place via this interface.
4 NOTES ON OPERATION
This device fulfils all of the technical requirements that are
compiled in current EC guidelines. The characteristics of this
product qualify it for the CE mark.
The individual connecting leads are each not to be longer
than 2 m.
The instrument can be so influenced by electrostatic charges
and other electromagnetic phenomena (HF, bursts, indirect
lightning discharges) that it no longer works within the given
specifications. Carry out the following measures to reduce or
eliminate the effect of such disturbance: Ensure potential
equalization at the PC (especially with Laptops). Use screen-
ing. Do not operate high frequency emitters (e.g. radio
equipment or mobile radiotelephones) in the immediate vicini-
ty. When a total failure of the instrument occurs, unplug it and
plug it back in again for a reset.
5 HANDLING
This section describes the start-up of the sensor and the re-
cording of measurement data. Please read this section thor-
oughly in order to avoid failures or operating errors.
5.1 Charging process
Use a USB-C cable to connect the sensor to a computer or
USB charger (not included).
During the charging process, the battery charge LED lights
up red. When the charging process is complete, the battery
charge LED lights up green. The charging time for a com-
pletely discharged battery is 3 hours maximum.
Disconnect the charger at the latest four hours af-
ter the completion of the charging process. Other-
wise, the service life of the battery may be nega-
tively affected.
5.2 Start-up
Attach the supplied mouthpiece with filter to the sensor.
Fig. 2: Connecting the mouthpiece with filter
Switch on the sensor by pressing the power button for more
than 3s. Now the Bluetooth LED flashes red. Start the soft-
ware and select the sensor.
If the sensor is to be used via the USB interface, it does not
need to be switched on. The sensor is connected directly to
the end device using the supplied USB cable.
There is a 9-digit code on
the back of the sensor
(Fig.3). The last 4 digits of
the code are displayed as
the sensor name in the
software (Fig.4). This ena-
bles the precise assign-
ment of the sensors within
the software.
Fig. 3
Fig. 4
Selection of the sensor via the Bluetooth interface
Make sure that the Bluetooth interface is activated on the
terminal device (PC/Tablet/Smartphone) and that the soft-
ware is allowed to access the interface.
After the sensor has been selected in the software, the LED
flashes green to indicate that the connection has been estab-
lished correctly. After the sensor has been coupled with the
software, the sensor is no longer visible to other users in the
software, and therefore can no longer be selected.
If the sensor is switched on and not connected, it switches off
automatically after 5 minutes.
Selection of the sensor via the USB interface
For this purpose the sensor must be plugged into the USB
port of the end device. It is not necessary to switch on the
sensor. The sensor is automatically recognized and dis-
played. It can be selected and connected directly.
Mouth piece with filter

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www.phywe.com, © All rights reserved 12936-01 / 2621
5.3 Recording of measurement data
Measuring principle:
Inside the tube, the air flow hits several small lamella. The
result is a slight flow resistance, leading to a small difference
in pressure. This pressure difference is evaluated electroni-
cally. In accordance with the Hagen–Poiseuille law, the pres-
sure drop upstream and downstream of the lamella in laminar
flow is directly proportional to the volume flow Q (flow rate).
The volume V is calculated by integrating the flow rate as a
function of time.
Set flow rate to zero:
Depending on how you hold the sensor, an offset value of the
flow rate may be displayed. This can cause the calculated
volume to increase continuously even though you are not
breathing into the sensor. To prevent this, set the flow rate to
zero using the software.
Measurement:
Stand upright and start the measurement. Exhale and inhale
evenly through the attached cardboard tube. Then, inhale as
deeply as possible and then exhale completely, if possible.
Stop the measurement. This spirogram provides information
about the various parameters of the respiratory volume, e.g.
the vital capacity and tidal volume.
6 TECHNICAL DATA
Operating temperature range: 5 - 40°C
Rel. humidity < 80%
Flow Rate
Measuring range
Resolution
..Accuracy
Volume:
Measuring range
Resolution
Accuracy
-10 l/s ~ 10 l/s
0.01 l/s
±3%
-15 l ~ 15 l
0.01
±3%
l
Max. date rate
Battery capacitiy
Max. wireless range (open field)
200 Hz
250 mAh
30 m
Dimensions (length x width x height)
1120x 40 x 37 mm
Weight
63 g
7 SCOPE OF DELIVERY
The extent of delivery is as follows
Cobra SMARTsense Spirometer 12936-01
USB cable type C 07935-00
1x Mouthpiece including filter 12936-20
Operating instructions
8 ACCESSORIES
The following accessories are available:
Cobra SMARTlink 12999-99
USB-charger 07934-99
USB cable type C 07935-00
USB-Bluetooth-Adapter 07936-00
Software measureLAB 14580-61
Mouthpiece including filter 12936-20
Cardboard mouthpiece with filter paper 12936-10
Free measureApp available from supplier portals
iOS
Android
Windows
9 CONFORMITY
10 DISPOSAL
The packaging mainly consists of environmentally-friendly
materials that should be returned to the local recycling sta-
tions.
PHYWE Systeme GmbH & Co. KG
Abteilung Kundendienst
Robert-Bosch-Breite 10
D–37079 Göttingen
Telefon [phone]
Fax [phone]
Do not dispose of this product with normal
household waste. If this unit needs to be
disposed of, please return it to the address
that is stated below for proper disposal
PHYWE Systeme GmbH & Co.KG hereby
declares that the radio system type 12936-
01 complies with the 2014/53/EU directive.
The complete text of the EC Declaration of
Conformity is available at the following In-
ternet address:
www.phywe.com/en/ec-declaration